What is Stainless Steel 301LN ?
301LN is an austenitic grade of stainless steel known for its increased strength while retaining excellent formability. It is a nitrogen-bearing version of 301, with an added benefit of reduced carbon content to enhance the resistance to corrosion as well as weldability. The UNS designation for 301LN is S30153 whereas the European equivalent is EN 1.4318.
What distinguishes 301LN from others is that it retains mechanical properties at cryogenic temperatures, and as such, it is a high-demand material in industries where strength, ductility, and corrosion resistance are required.
301LN Stainless Steel Sheet, Plate & Coil Supplier in India
Sanghvi Overseas is one of India's best manufacturers, suppliers, and exporters of 301LN Stainless Steel in Sheets, Plates, and Coils. We use the finest raw materials, which comply with national as well as international standards. Having the largest inventory in Mumbai, we stock 301LN sheets and plates in different sizes, dimensions, and thicknesses. We also make available custom sizes as per the requirements of the clients at reasonable prices.
Key Features & Advantages of 301LN
- Excellent formability, making it suitable for deep drawing and other forming processes.
- High strength maintained after cold working
- Non-magnetic in annealed state; becomes magnetic with cold work
- Superior corrosion resistance compared to standard 301
- Suitable for low-temperature applications including cryogenics
- Compatible with conventional welding techniques
Product Forms & Specifications
Stainless Steel 301LN Sheets
| Thickness | Width | Surface Finishes |
| 0.3mm – 6mm (customizable) | Up to 2,000mm | 2B: Smooth, slightly reflective
(general-purpose). BA (Bright Annealed): Mirror-like finish (decorative applications). No. 4: Brushed finish (architectural use). |
Stainless Steel 301LN Plates
| Thickness | Applications | Tolerances |
| 6mm – 50mm | Structural frames, industrial machinery, hydraulic press components. | ASTM A480-compliant (±5% thickness tolerance). |
Stainless Steel 301LN Coils
| Width | Inner/Outer Diameter | Weight |
| 1,000mm – 1,500mm | 508mm ID / 1,200mm OD (standard). | Up to 10 tons per coil. |
AISI 301LN Equivalent Material Grades
| Grade | UNS No | Euronorm | Swedish SS | Japanese JIS | |
| No | Name | ||||
| 301LN | S30153 | 1.4318 | X2CrNiN18-7 | - | - |
Stainless Steel 301LN Chemical Composition
- Contains chromium (16-18%) and nickel (6-8%), which provide corrosion resistance.
- Nitrogen is added to improve strength and corrosion resistance.
- Low carbon content (max 0.03%) reduces the risk of carbide precipitation during welding
| Element | Content (%) |
| Iron, fe | Balance |
| Chromium, Cr | 16-18 |
| Nickel, Ni | 6-8 |
| Manganese, Mn | 2 max |
| Silicon, Si | 1 max |
| Nitrogen, N | 0.07-0.20 |
| Phosphorous, P | 0.045 max |
| Carbon, C | 0.03 max |
| Sulfur, S | 0.03 |
Stainless 301LN Mechanical Properties
- High tensile strength and excellent work hardening capabilities.
- Can achieve higher strength levels through cold working.
|
Temper ASTM A666 |
Tensile Strength (Mpa) min. |
Yield Strength 0.2% Proof (Mpa) min. |
Elongation (% in 50mm) (thick > 0.76mm) min. |
Bend Test (1.27 – 4.76mm thick) |
Hardness Rockwell C (Note 2) |
|
| Bend Angle (°) | Factor (Note 1) | |||||
| Annealed | 515 | 205 | 40 | 180 | 1 | - |
| 1/16 Hard | 620 | 310 | 40 | 180 | 1 | - |
| 1/8 Hard | 690 | 380 | 40 | 180 | 1 | - |
| 1/4 Hard | 860 | 515 | 25 | 90 | 2 | 25 - 32 |
| 1/2 Hard | 1035 | 760 | 18 | 90 | 2 | 32 - 37 |
| 3/4 Hard | 1205 | 930 | 12 | 90 | 3 | 37 - 41 |
| Full Hard | 1275 | 965 | 9 | 90 | 5 | 41+ |
Note:
1. Bend test is around a diameter of the Bend Factor multiplied by the steel thickness.
2. Hardness values are typical industry standards – there are no specified limits.
Physical Properties (Grades 301LN - typical values in the annealed condition)
| Grade | Density (kg/m³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 301LN | 7900 | 193 | 17.0 | 17.2 | 18.2 | 16.3 | 21.5 | 500 | 720 |
Stainless Steel Grade 301LN Common Applications
- Railway carriages and metro coaches
- Automotive structural parts and frames
- Cryogenic storage tanks
- Pressure vessels and welded tanks
- Architectural panels and cladding
- Chemical processing equipment
- Food processing equipment
- Medical equipment
- Heat exchangers and condensers
- Aerospace components
Comparison with Competing Grades
| Property | 301LN | 304 | 316 |
| Corrosion Resistance | Good (avoid chlorides) | Excellent | Superior (Mo-added) |
| Tensile Strength | 650–850 MPa | 515–720 MPa | 515–690 MPa |
| Cost (Index) | 100 | 120 | 150 |
| Formability | Excellent | Good | Moderate |
Why Choose Us for 301LN SS Sheets, Plates & Coils
- Years of experience in stainless steel supply
- Customised cutting and shearing services
- Bulk stock availability for immediate dispatch
- Competitive pricing and MOQ flexibility
- Global export network
FAQs
How does 301LN differ from 301 and 301L stainless steels?
301LN has a greater nitrogen content than 301 and 301L, though all three are austenitic stainless steels with generally similar overall compositions. The higher nitrogen in 301LN gives it greater strength and corrosion resistance and it is an appropriate selection for use where these are especially desirable.
Is 301LN applicable for use in cryogenic temperatures?
Yes, 301LN's high nitrogen content increases its low-temperature toughness and makes it applicable for cryogenic use.
Does 301LN rust?
Like all stainless steels, it resists corrosion but in extremely corrosive environments, an appropriate surface treatment is recommended.
How does cold working affect 301LN stainless steel?
Cold working considerably enhances the strength of 301LN due to strain hardening. The tensile strength can be increased to about 1,200-1,400 MPa and the yield strength to around 700-900 MPa, thereby improving fatigue resistance.
What are the corrosion resistance properties of 301LN stainless steel?
301LN provides good corrosion resistance in most environments. It is susceptible to pitting and crevice corrosion in chloride environments, but proper surface treatments and maintenance can improve its corrosion resistance.
